blustealer | 9ccd495500c30bd78504986105407a90a33189abba44925eb0877b494693026c

General

Target

Payment Slip_CityBank010922.exe
Size

230KB
MD5

12efd73394350c0076c6839c475a8821
SHA1

2f62d39d5742fa95e49b1cffce09bcf0b5638993
SHA256

9ccd495500c30bd78504986105407a90a33189abba44925eb0877b494693026c
SHA512

45c48509945314723844fc6af2e528121c3b7ded541ffe79106ea70540556269afcb26720b52559d8677425fc7a0f460abba6f5dd138580bf5ea1795a0fdac11
SSDEEP

3072:nTN/T7gqPHIvuvHQFpaIYkKEPIFJzE17vte:F5VHsaIYkb

Score

10^/10

blustealer stormkitty collection persistence stealer

Malware Config

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/3676-152-0x0000000000720000-0x000000000073A000-memory.dmp	family_stormkitty

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Payment Slip_CityBank010922.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Lxspkri = "\"C:\\Users\\Admin\\AppData\\Roaming\\Tpybod\\Lxspkri.exe\""	Payment Slip_CityBank010922.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
31	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2676 set thread context of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2460 set thread context of 3676	2460	InstallUtil.exe	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	AppLaunch.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4912	powershell.exe
4912	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2460	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	Payment Slip_CityBank010922.exe
Token: SeDebugPrivilege	4912	powershell.exe
Token: SeDebugPrivilege	3676	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2460	InstallUtil.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 4912	2676	Payment Slip_CityBank010922.exe	82
PID 2676 wrote to memory of 4912	2676	Payment Slip_CityBank010922.exe	82
PID 2676 wrote to memory of 4912	2676	Payment Slip_CityBank010922.exe	82
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2676 wrote to memory of 2460	2676	Payment Slip_CityBank010922.exe	85
PID 2460 wrote to memory of 3676	2460	InstallUtil.exe	86
PID 2460 wrote to memory of 3676	2460	InstallUtil.exe	86
PID 2460 wrote to memory of 3676	2460	InstallUtil.exe	86
PID 2460 wrote to memory of 3676	2460	InstallUtil.exe	86
PID 2460 wrote to memory of 3676	2460	InstallUtil.exe	86

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Payment Slip_CityBank010922.exe
"C:\Users\Admin\AppData\Local\Temp\Payment Slip_CityBank010922.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4912
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2460
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:3676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2460-154-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2460-150-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2460-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2460-145-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2676-133-0x0000000006A70000-0x0000000007014000-memory.dmp

Filesize
5.6MB

Download
memory/2676-134-0x00000000065C0000-0x0000000006652000-memory.dmp

Filesize
584KB

Download
memory/2676-135-0x0000000006560000-0x0000000006582000-memory.dmp

Filesize
136KB

Download
memory/2676-132-0x0000000000CA0000-0x0000000000CDE000-memory.dmp

Filesize
248KB

Download
memory/3676-153-0x0000000005410000-0x00000000054AC000-memory.dmp

Filesize
624KB

Download
memory/3676-152-0x0000000000720000-0x000000000073A000-memory.dmp

Filesize
104KB

Download
memory/4912-137-0x0000000002FD0000-0x0000000003006000-memory.dmp

Filesize
216KB

Download
memory/4912-143-0x0000000006A80000-0x0000000006A9A000-memory.dmp

Filesize
104KB

Download
memory/4912-142-0x0000000007C10000-0x000000000828A000-memory.dmp

Filesize
6.5MB

Download
memory/4912-141-0x00000000065B0000-0x00000000065CE000-memory.dmp

Filesize
120KB

Download
memory/4912-140-0x0000000005FA0000-0x0000000006006000-memory.dmp

Filesize
408KB

Download
memory/4912-139-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/4912-138-0x0000000005890000-0x0000000005EB8000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads